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There are many diverse types of CO2 feedgas streams in commercial use today (e.g. ammonia, ethylene oxide production, organic product fermentation, natural wells, refinery gases, acid neutralization, landfill gas, fuel combustion - power plant stacks, etc.). New sources are constantly being evaluated throughout the world in order to provide a reliable supply of liquified CO2 product. Each feedgas type has a unique, complex set of impurities that must be identified and accurately measured. A fully characterized feedgas stream allows plant engineers to design /install the types of process equipment and filters needed to obtain the required purity of liquified/solid CO2 product. Feedgas impurity data also allows plant operators to estimate proper plant maintenance schedules, based on filter bed sorbent capacity.
Another important reason to periodically test your CO2 feedgas is that gradual or sudden changes in impurity levels can sometimes be experienced. Unexpected increases in certain impurities such as sulfur (e.g. carbonyl sulfide, H2S or mercaptans), oxides of nitrogen, aromatics (e.g.benzene) or organic loads (e.g. methane, ethanol, acetaldehyde, ethylene oxide) can cause premature filter bed saturation and impurity “breakthroughs” leading to costly product quality upsets and customer complaints. In addition, periodic testing of in-process CO2 at certain critical points can signal hardware or processing problems that may be developing.
Our expertise and technical resources are unrivaled for providing this highly-specialized service. We make it easy & economical for both our domestic & international customers to measure the quality of their complex CO2 feedgas stream or in-process samples.
For example: ALI can provide on-site sampling services, rent you our special NON-HAZMAT “No-HAZ” CO2 Feedgas Sampling Kit or passivated sampling cylinders. For our international customers or domestic customers that are not hazmat-certified to ship high pressure CO2 samples, our No-HAZ CO2 Feedgas Sampling Kit is highly recommended. This special kit allows you to take a a small amount of low pressure, CO2 feedgas sample and ship it to us as non-dangerous goods. All “No-Haz” sampling kits come complete with pictorial sampling instructions. For very low pressure streams, we can supply small sampling pumps or special “vacu-chamber” accessories that allow you to properly flush and fill our sample containers even from LT 5 psig sources. For very hot feedgas sources (e.g stack gas sources), we also have special “gas-cooling” trains that can be used upstream of our sampling equipment.
The “No-Haz” kit consists of 2 types of sample containers: 4, 1L “True BlueTM” Polybags and 1, 75 or 150 cc “Minicyl” container. Together these small containers allow us to properly perform the range of analytical tests needed to fully characterize your CO2 feedgas stream.
For example, the MiniCyl allows us to accurately determine the levels of hydrogen, nitrogen, argon, oxygen, helium carbon monoxide and other air gases that may be present. Polybags are used to measure a wide variety of volatile impurities.
We also can supply specialized sample kits for testing radon222, glycols /glycerols and certain types of heavy metal vapors such as mercury, chromium, arsenic and others.
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